OS10 Enterprise Edition User Guide Release 10.4.1.0

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Breakout auto-configuration

You can globally enable front-panel Ethernet ports to automatically detect SFP pluggable media in a QSFP+ or QSFP28 port. The port autoconfigures breakout interfaces for media type and speed. For example, if you plug a 40G DAC cable with 4x10G far-side transceivers into a QSFP28 port, the port autoconfigures in 10g-4x Interface-breakout mode.

RJ-45 ports and ports that are members of a port group do not support breakout auto-configuration. The breakout auto-configuration feature is disabled by default.

Enable breakout auto-configuration

OS10(config)# feature auto-breakout

Display breakout auto-configuration

Before you plug a cable in Ethernet port 1/1/25:
OS10# show interface status
                                 
                                 ------------------------------------------------------------------
                                 Port       Description  Status Speed Duplex Mode Vlan Tagged-Vlans
                                 ------------------------------------------------------------------
                                 Eth 1/1/1               down   0     auto    -
                                 Eth 1/1/2               down   0     auto    A    1    -
                                 Eth 1/1/25              down   0     auto    A    1    -
                                 Eth 1/1/29              down   0     auto    A    1    -
                              

After you enter feature auto-breakout and plug a breakout cable in Ethernet port 1/1/25:

OS10# show interface status
                              
                              ------------------------------------------------------------------
                              Port       Description  Status Speed Duplex Mode Vlan Tagged-Vlans
                              ------------------------------------------------------------------
                              Eth 1/1/1               down   0     auto    -
                              Eth 1/1/2               down   0     auto    A    1    -
                              Eth 1/1/25:1            down   0     auto    A    1    -
                              Eth 1/1/25:2            down   0     auto    A    1    -
                              Eth 1/1/25:3            down   0     auto    A    1    -
                              Eth 1/1/25:4            down   0     auto    A    1    -
                              Eth 1/1/29              down   0     auto    A    1    -
                           

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